They're actually pretty adorable, and they eat mice. But you may unwittingly be inviting them to hang out in, and tear up, ...

"I laughed at someone's joke, tossed my head back, and gave myself a minor concussion from hitting my head on the wall so hard." ...

Biter Nests are not to be messed with early game. While your pistol or machine gun will be good for stopping small swarms of Biters from attacking your pipelines, bringing the fight to their home turf ...